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制冷设备中干式壳管式蒸发器的特点

作者:admin 来源:本站 发布时间:2018-2-3 15:06:01

①能保证进入制冷系统的润滑油顺利返回压缩机;
(1) the lubricating oil entering the refrigeration system can return to the compressor smoothly.
②所需要的制冷剂充注量较小,仅为同能力满液式蒸发器的1/3;
The required refrigerant filling amount is small, only 1/3 of the same capacity full liquid evaporator.
③用于冷却水时,即使蒸发温度达到0℃,也不会发生冻结事故;
(3) when the water is used for cooling water, the freezing accident will not occur even if the evaporation temperature reaches 0 degrees C.

④可采用热力膨胀阀供液,这比满液式的浮球阀供液更加可靠。

(4) the thermal expansion valve can be used to supply liquid, which is more reliable than the liquid filled ball valve.
这类蒸发器按空气的运动状态分有冷却自由运动空气的蒸发器和冷却强制流动空气的蒸发器两种型式。
This type of evaporator is divided into two types, the evaporator cooling free air and the evaporator cooling the forced flow air according to the movement of air.
冷却排管:冷却自由运动空气的蒸发器,由于被冷却空气呈自由运动状态,其传热系数较低。所以这种蒸发器被制成光管蛇形管管组,通常称做冷却排管。一般用于冷藏库和低温试验装置中。
Cooling tube: evaporator with free air cooling, the heat transfer coefficient is low because of the free motion of the cooled air. So the evaporator is made into a light tube snake tube group, usually called a cooling tube. It is generally used in cold storage and low temperature test equipment.
冷却排管特点:冷却排管具有存液量少,其充液量约为排管内容积的40%左右,操作维护方便等优点。但存在管内制冷剂流动阻力大,蒸发后的蒸气不易排出。同时由于管外空气为自由运动,传热系数较低,一般在6.3~8.1W(m2·K)范围。
Cooling tube characteristics: the cooling drain pipe has less liquid storage, its liquid filling amount is about 40% of the pipe content product, operation and maintenance is convenient and so on. However, the flow resistance of the refrigerant in the tube is large, and the vapour after evaporation is not easy to expelled. At the same time, due to the free movement of the air outside the tube, the heat transfer coefficient is low, which is generally in the range of 6.3~8.1W (m2. K).
以上就是为大家介绍的有关中山东制冷机组http://www.sddszl.cn的详细的介绍,希望对您有所帮助.如果您有什么疑问的话,欢迎联系我们.我们将以最专业的态度,为您提供服务.
The above is a detailed introduction about the http://www.sddszl.cn of Shandong refrigeration unit. I hope to help you. If you have any questions, please feel free to contact us. We will provide you with the most professional attitude.